JP2008298448A - Navigation system and navigation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To acquire the position of another vehicle and display it on a map with proper timing, when waiting for another vehicle. <P>SOLUTION: This navigation device loaded on own vehicle sets a waiting place (step S1) and detects an own vehicle position (step S10). The device determines whether the detected own vehicle position is near the set waiting place (step S20) and requests another vehicle position information to another vehicle, when it is determined that the position is near the waiting place (step S30). The device displays the other vehicle position on the map, based on the another vehicle positional information transmitted from a navigation device of another vehicle, in response to this request. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a navigation device mounted on a vehicle and a navigation system including a plurality of navigation devices.

  2. Description of the Related Art Conventionally, an apparatus that receives position information from another vehicle and displays the position of the other vehicle on a map based on the received position information of the other vehicle is known (see Patent Document 1).

Japanese Patent Laid-Open No. 9-44795

  In the conventional apparatus as disclosed in Patent Document 1, in order to correctly display the position of the other vehicle that is running, the position information of the other vehicle must be acquired at regular intervals. This causes an increase in processing load during communication, and also leads to an increase in communication charges when using a public line. However, in the case where a plurality of accompanying vehicles meet in a large parking lot, it is only necessary to know the position of each other when they arrive at the parking lot, which is the meeting place. It is not necessary to acquire at regular intervals. Accordingly, there is a need for an apparatus that can acquire the position of another vehicle and display it on a map at an appropriate timing when meeting with another vehicle.

A navigation system according to a first aspect of the present invention is a navigation system having a first navigation device mounted on a first vehicle and a second navigation device mounted on a second vehicle, The navigation device includes: a first determination unit that determines whether or not the position of the first vehicle is in the vicinity of the set meeting place; and the first determination unit determines that the position of the first vehicle is in the vicinity of the meeting place. A request means for requesting the second navigation apparatus for position information of the second vehicle, and a second transmitted from the second navigation apparatus in response to a request by the request means. Display control means for displaying the position of the second vehicle on a map based on the position information of the vehicle, the second navigation device, in response to a request by the request means, In which a transmission control means for transmitting the location information of the second vehicle to the first navigation device.
According to a second aspect of the present invention, in the navigation system according to the first aspect, the second navigation device determines whether or not the position of the second vehicle is within a predetermined distance from the meeting place. The transmission control means further comprises position information of the second vehicle in response to a request by the request means when the second determination means determines that the position of the second vehicle is within a predetermined distance from the meeting place. Is transmitted to the first navigation device, and the second determination means determines that the position of the second vehicle is not within the predetermined distance from the meeting place, even if there is a request by the request means. Information is not transmitted to the first navigation device.
According to a third aspect of the present invention, in the navigation system according to the first or second aspect, the first navigation device includes a third determination unit that determines whether or not the first vehicle has arrived at the meeting place; When it is determined by the third determining means that the first vehicle has arrived at the meeting place, it further comprises arrival notification means for transmitting a notification to that effect to the second navigation device.
According to a fourth aspect of the present invention, in the navigation system according to the third aspect, when the arrival notification means determines that the first vehicle has arrived at the meeting place by the third determination means, together with a notification to that effect Further, the position information of the first vehicle is transmitted to the second navigation device.
According to a fifth aspect of the present invention, in the navigation system according to the fourth aspect, the second navigation device aims at the position of the first vehicle based on the position information of the first vehicle transmitted by the arrival notification means. Further comprising destination setting means for setting on the ground and recommended route searching means for searching for a recommended route from the position of the second vehicle to the position of the first vehicle set as the destination by the destination setting means. It is.
In the navigation device according to the sixth aspect of the present invention, a first determination means for determining whether or not the position of the own vehicle is in the vicinity of the set meeting place, and the position of the own vehicle is determined by the first determination means. Based on the request means for requesting other vehicle position information to the other vehicle when the vehicle is determined to be near the vehicle, and the other vehicle position information transmitted from the other vehicle in response to a request by the request means Display control means for displaying the position on the map.
In the navigation device according to the seventh aspect of the present invention, the position of the host vehicle is determined by the second determination unit that determines whether or not the position of the host vehicle is within a predetermined distance from the set meeting place, and the second determination unit. When it is determined that it is within a predetermined distance from the meeting place, the vehicle position information is transmitted to the other vehicle in response to a request from the other vehicle, and the position of the own vehicle is within a predetermined distance from the meeting place by the second determination means. If it is determined that the vehicle position information is not, a transmission control unit that does not transmit the vehicle position information to the other vehicle even when there is a request from the other vehicle is provided.

  According to the present invention, when meeting with another vehicle, the position of the other vehicle can be acquired and displayed on a map at an appropriate timing.

  FIG. 1 shows a configuration example of a system using a navigation apparatus according to an embodiment of the present invention. A navigation device 10 and a communication terminal 11 are mounted on the host vehicle 1, and a navigation device 20 and a communication terminal 21 are mounted on the other vehicle 2.

  The navigation device 10 detects the position of the host vehicle 1, that is, the host vehicle position, and displays a host vehicle position mark indicating the host vehicle position on a map. Moreover, the navigation apparatus 10 will perform the navigation process for guiding the own vehicle 1 to the destination, if a destination is set. That is, when a destination is set for the navigation device 10 by a user operation or the like, the navigation device 10 searches for a recommended route to the destination based on the map data. Then, the searched recommended route is displayed on the map, and the user's vehicle 1 is guided to the destination by instructing the user in the traveling direction according to the recommended route.

  Furthermore, the navigation apparatus 10 can set the same place as the meeting place for the host vehicle 1 and the other vehicle 2. When the host vehicle 1 approaches the meeting place, the navigation device 10 requests the other vehicle 2 to transmit the position information, that is, the other vehicle position information. When the other vehicle position information is transmitted from the other vehicle 2 in response to this request, the navigation device 10 displays the position of the other vehicle 2 on the map based on the other vehicle position information. The details of the specific processing executed at this time will be described later in detail with reference to the flowchart of FIG.

  The communication terminal 11 performs wireless communication with the communication terminal 21 mounted on the other vehicle 2 by connecting to the public wireless network 3. Through this wireless communication, the communication terminal 11 receives the other vehicle position information transmitted from the other vehicle 2, and the position information of the own vehicle 1, that is, the own vehicle position information output from the navigation device 10, is the other vehicle 2 information. Sent to. By performing wireless communication through the public wireless network 3 in this way, mutual positional information is exchanged between the own vehicle 1 and the other vehicle 2. The public wireless network 3 is a mobile phone network, for example, and the communication terminal 11 is a mobile phone, for example.

  The other vehicle position information received at the communication terminal 11 is output from the communication terminal 11 to the navigation device 10. The other vehicle position information is used when the position of the other vehicle 2 is displayed on the map in the navigation device 10 as described above.

  The navigation device 10 and the communication terminal 11 mounted on the host vehicle 1 perform processing and operations as described above. In addition, the navigation apparatus 20 and the communication terminal 21 which are mounted in the other vehicle 2 perform the same process and operation | movement, respectively.

  Next, the configuration of the navigation device 10 is shown in FIG. The navigation device 10 includes a control unit 101, a vibration gyro 102, a vehicle speed sensor 103, a hard disk (HDD) 104, a GPS receiving unit 105, a display monitor 106, and an input device 107.

  The control unit 101 includes a microprocessor, various peripheral circuits, a RAM, a ROM, and the like, and executes various processes based on a control program and map data recorded in the HDD 104. The control unit 101 executes various processes in the navigation device 10. For example, a destination search process when setting the destination, a recommended route search process to the set destination, various image display processes, a route guidance process, and the like are executed. Further, the processing shown in the flowchart of FIG. 3 described later is also executed by the control unit 101.

  The control unit 101 is connected to the communication terminal 11. When the own vehicle position information is output to the communication terminal 11 under the control of the control unit 101, the own vehicle position information is transmitted from the own vehicle 1 to the other vehicle 2 by wireless communication performed by the communication terminal 11. On the other hand, the other vehicle position information received from the other vehicle 2 by the communication terminal 11 is output from the communication terminal 11 to the control unit 101.

  The vibration gyro 102 is a sensor for detecting the angular velocity of the host vehicle 1. The vehicle speed sensor 103 is a sensor for detecting the vehicle speed of the host vehicle 1. By detecting the motion state of the host vehicle 1 at predetermined time intervals using these sensors, the amount of movement of the host vehicle 1 is obtained, and the current position of the host vehicle 1 is thereby detected.

  The HDD 104 is a non-volatile recording medium in which data can be rewritten, and various types of data including map data are recorded. The map data recorded in the HDD 104 is read out under the control of the control unit 101 as necessary, and is used for various processes and controls executed by the control unit 101. This map data includes route calculation data, route guidance data, road data, and background data. The route calculation data is used for route search to the destination. The route guidance data is used to guide the host vehicle 1 to a destination according to a set route, and represents an intersection name, a road name, and the like. The road data represents the shape and type of the road. The background data represents map shapes other than roads such as rivers and railways, positions of various facilities, and the like. Note that the minimum unit representing each road in the map data is called a link. That is, each road in the map data is composed of a plurality of links.

  The GPS receiving unit 105 receives a GPS signal transmitted from a GPS satellite and outputs it to the control unit 101. The GPS signal includes the position and transmission time of the GPS satellite that transmitted the GPS signal as information for obtaining the position of the host vehicle 1 and the current time. Therefore, by receiving GPS signals from a predetermined number or more of GPS satellites, the current position and current time of the host vehicle 1 can be calculated based on these pieces of information.

  The display monitor 106 is a device for displaying various screens in the navigation device 10 and is configured using a liquid crystal display or the like. The display monitor 106 displays a map around the host vehicle 1 and displays the position of the host vehicle and the position of the other vehicle on the map. The contents of the screen displayed on the display monitor 106 are determined by screen display control performed by the control unit 101. The display monitor 106 is installed at a position where the user can easily see, for example, on the dashboard of the own vehicle 1 or in the instrument panel.

  The input device 107 is a device for a user to perform various input operations for operating the navigation device 10, and includes various input switches. By operating the input device 107, the user can input, for example, the name of a facility or point desired to be set as a destination, select a destination from pre-registered registered locations, or select an arbitrary map. Or scroll in the direction. The input device 107 can be realized by an operation panel, a remote controller, or the like. Alternatively, the input device 107 may be realized by a touch panel integrated with the display monitor 106.

  When the user operates the input device 107 to set a destination, the navigation device 10 searches for a recommended route to the destination by performing a predetermined algorithm operation based on the above-described route calculation data. Then, the current position of the host vehicle 1 is detected, and the host vehicle 1 is guided to the destination according to the searched recommended route while displaying the road map around it.

  Next, processing executed in the control unit 101 of the navigation device 10 when the host vehicle 1 and the other vehicle 2 wait will be described with reference to the flowchart shown in FIG. In step S1, the control unit 101 sets a meeting place. Here, for example, the same destination is set in each of the navigation device 10 and the navigation device 20, and the destination is set as a meeting place. Or you may make it set the same waiting place in the navigation apparatuses 10 and 20 by transmitting the information of the waiting place set in either one of the navigation apparatuses 10 or 20 to the other. In addition, when setting this meeting place, you may make it set the contact address of the other vehicle 2 collectively. For example, the contact information of the other vehicle 2 can be registered by a method such as registering the telephone number of the communication terminal 21.

  In step S10, the control unit 101 detects the vehicle position. Here, as described above, the vehicle position is detected based on outputs from the vibration gyro 102, the vehicle speed sensor 103, and the GPS receiver 105.

  In step S20, the control unit 101 determines whether or not the own vehicle position detected in step S10 is near the meeting place set in step S1. When the own vehicle position is near the meeting place, for example, when the distance between the own vehicle position and the meeting place is within 300 m, the process proceeds to step S30. On the other hand, if the vehicle position is not near the meeting place, the process proceeds to step S40 without executing step S30.

  In step S30, the control unit 101 executes position information request processing. As a result, the navigation device 10 makes a request for the other vehicle position information to the navigation device 20. The specific contents of the position information request process executed here will be described later in detail with reference to the flowchart of FIG. If step S30 is performed, it will progress to step S40.

  In step S <b> 40, the control unit 101 determines whether there is a request for position information from the other vehicle 2. When the position information request process of step S30 is executed in the navigation device 20 of the other vehicle 2, the position information request is made from the other vehicle 2 to the navigation device 10. In this case, the process proceeds to step S50. On the other hand, if there is no request for position information from the other vehicle 2, the process proceeds to step S60 without executing step S50.

  In step S <b> 50, the control unit 101 executes a response process for responding to a request for position information from the other vehicle 2. The specific contents of the response process executed here will be described in detail later with reference to the flowchart of FIG. If step S50 is performed, it will progress to step S60.

  In step S60, the control unit 101 determines whether or not the host vehicle 1 has arrived at the meeting place set in step S1. When the own vehicle position detected in step S10 matches the set meeting place and the own vehicle 1 further stops, it is determined that the vehicle has arrived at the meeting place, and the process proceeds to step S70. At this time, for example, based on the vehicle speed of the host vehicle 1, the operation state of the parking brake, the position of the shift lever, the operating state of the engine, it can be determined whether or not the host vehicle 1 has stopped. On the other hand, if the host vehicle 1 has not yet arrived at the meeting place, the process proceeds to step S80.

  In step S <b> 70, the control unit 101 executes an arrival notification process for notifying that the host vehicle 1 has arrived at the meeting place. As a result, the navigation device 10 notifies the navigation device 20 of arrival at the meeting place. The specific contents of the arrival notification process executed here will be described later in detail with reference to the flowchart of FIG. If step S70 is performed, the flowchart of FIG. 3 will be complete | finished.

  In step S80, the control unit 101 determines whether the arrival at the meeting place is notified from the other vehicle 2. When the arrival notification process in step S70 is executed in the navigation device 20 of the other vehicle 2, the other vehicle 2 notifies the navigation device 10 that it has arrived at the meeting place. In this case, the process proceeds to step S90. On the other hand, if there is no arrival notification from the other vehicle 2, the process returns to step S10 without executing step S90.

  In step S <b> 90, the control unit 101 executes an arrival notification reception process for receiving an arrival notification from the other vehicle 2. The specific contents of the arrival notification reception process executed here will be described later in detail with reference to the flowchart of FIG. If step S90 is performed, it will return to step S10 and will repeat the process similar to the above from the detection of the own vehicle position.

  Next, the flowchart of the position information request process in FIG. 4 will be described. In step S300, the control unit 101 transmits own vehicle position information based on the own vehicle position detected in step S10 of FIG. The vehicle position information is transmitted by connecting the communication terminal 11 to the public wireless network 3 and performing wireless communication with the communication terminal 21 mounted on the other vehicle 2 as described above. Is called.

  In step S <b> 310, the control unit 101 requests other vehicle position information from the navigation device 20 of the other vehicle 2. In the next step S320, the control unit 101 determines whether or not the other vehicle position information is transmitted from the navigation device 20 in response to the request in step S310. If the other vehicle position information indicating the position of the other vehicle 2 is transmitted by executing the processing of step S530 of FIG. 5 described later in the navigation device 20, the process proceeds to step S330. On the other hand, when the other vehicle position information is not transmitted from the navigation device 20, the process proceeds to step S350.

  In step S330, the control unit 101 receives the other vehicle position information transmitted from the navigation device 20. The navigation device 20 transmits the other vehicle position information to the communication terminal 11 via the communication terminal 21 and the public wireless network 3. The control unit 101 receives the other vehicle position information received by the communication terminal 11 from the communication terminal 11 to receive the other vehicle position information in step S330. Thereby, the other vehicle position information is acquired in the control unit 101.

  In step S340, the control unit 101 displays the other vehicle position based on the other vehicle position information received in step S330. Thereby, the position of the other vehicle 2 is displayed on the map. At this time, in order to be able to appropriately display the position of the other vehicle 2 on the map, the scale and display range of the map may be adjusted automatically or in response to a user response. If step S340 is performed, the control part 101 will return to FIG. 3, and will complete the position information request | requirement process of step S30.

  On the other hand, when the process proceeds from step S320 to step S350, in step S350, the control unit 101 displays on the display monitor 106 that the other vehicle 2 has not yet approached the meeting place. Thereby, when other vehicle position information is not transmitted from the navigation apparatus 20, it judges that the other vehicle 2 has not approached the meeting place yet, displays that, and notifies a user. If step S350 is performed, the control part 101 will return to FIG. 3, and will complete the position information request | requirement process of step S30.

  Next, the flowchart of the response process in FIG. 5 will be described. In step S500, the control unit 101 receives the other vehicle position information transmitted from the navigation device 20. The other vehicle position information is transmitted from the navigation device 20 in step S300 of FIG. 4 when the other vehicle 2 reaches the vicinity of the meeting place and the navigation device 20 executes the position information request process of step S30. It is. As described above, when there is a request for position information from the other vehicle 2, the control unit 101 acquires the other vehicle position information by executing step S500.

  In step S510, the control unit 101 displays on the display monitor 106 that the other vehicle 2 has reached the vicinity of the meeting place. Thereby, when there is a request for position information from the navigation device 20, it is determined that the other vehicle 2 has arrived in the vicinity of the meeting place, and this is displayed and notified to the user.

  In step S520, the control unit 101 determines whether or not the vehicle position detected in step S10 in FIG. 3 is within a predetermined distance from the meeting place. If the vehicle position is within a predetermined distance from the meeting place, for example, within 1 km, the process proceeds to step S530. In this case, in step S530, the control unit 101 transmits the vehicle position information to the navigation device 20 of the other vehicle 2. If step S530 is performed, the control part 101 will return to FIG. 3, and will complete the response process of step S50. On the other hand, if the vehicle position is not within a predetermined distance from the meeting place, the process returns to FIG. 3 without executing step S530. Thus, when the own vehicle position is within a predetermined distance from the meeting place, the own vehicle position information is transmitted from the own vehicle 1 to the other vehicle 2. However, if the vehicle position is not within a predetermined distance from the meeting place, the vehicle position information is not transmitted.

  Next, the flowchart of the arrival notification process in FIG. 6 will be described. In step S700, the control unit 101 notifies the navigation device 20 that the host vehicle 1 has arrived at the meeting place. The arrival notification is transmitted in the same manner as when the vehicle position information is transmitted. The communication terminal 11 connects to the public wireless network 3 and performs wireless communication with the communication terminal 21 mounted on the other vehicle 2. Is done.

  In step S <b> 710, the control unit 101 transmits the vehicle position information to the navigation device 20 of the other vehicle 2. Thereby, when the own vehicle 1 arrives at the meeting place, the own vehicle position information is transmitted from the own vehicle 1 to the other vehicle 2. If step S710 is performed, the control part 101 will return to FIG. 3, and will complete the arrival notification process of step S70.

  Note that it is preferable to execute the arrival notification process again when the host vehicle 1 moves and stops at another place after the arrival notification process is executed once. In this way, even when the host vehicle 1 moves after stopping, the change of the host vehicle position can be notified to the other vehicle 2.

  Next, the flowchart of the arrival notification reception process in FIG. 7 will be described. In step S <b> 900, the control unit 101 receives the other vehicle position information transmitted from the navigation device 20. The other vehicle position information is transmitted from the navigation device 20 in step S710 of FIG. 6 when the other vehicle 2 arrives at the meeting place and the navigation device 20 executes the arrival notification process in step S70. . As described above, when there is an arrival notification at the meeting place from the other vehicle 2, the other vehicle position information is acquired by the control unit 101 by executing step S <b> 900.

  In step S910, the control unit 101 displays on the display monitor 106 that the other vehicle 2 has arrived at the meeting place. Thereby, when the arrival notification to the meeting place is received from the other vehicle 2, it is determined that the other vehicle 2 has arrived at the meeting place, and this is displayed and notified to the user.

  FIG. 8 is an example of an arrival notification screen displayed on the display monitor 106 in step S910. In this screen, the position of the host vehicle 1 is indicated on the map by the host vehicle position mark 30 and a meeting place mark 31 indicating a meeting place is displayed on the parking lot 32. Thereby, it turns out that the parking lot 32 is set as the meeting place of the own vehicle 1 and the other vehicle 2.

  In the message window 33, a text message indicating that the other vehicle 2 has arrived at the parking lot 32, which is a meeting place with the own vehicle 1, is displayed. Note that “Mr. XXX” in the text message is a name registered in advance as the driver of the other vehicle 2. Further, the message window 33 displays an inquiry as to whether or not to enlarge the map.

  In step S920, the control unit 101 determines whether to enlarge the map to be displayed. If “Yes” is selected by the user's operation in the message window 33 of FIG. 8, it is determined that the map is to be enlarged, and the process proceeds to step S930. On the other hand, if “No” is selected in the message window 33, the process proceeds to step S940.

  In step S930, the control unit 101 changes the map scale. Here, based on the own vehicle position detected in step S10 in FIG. 3 and the other vehicle position information received in step S900, the positional relationship between the own vehicle position and the other vehicle position is represented on the map in an easy-to-understand manner. The optimal map scale is automatically set.

  In step S940, the control unit 101 displays the other vehicle position based on the other vehicle position information received in step S900. Thereby, the position of the other vehicle 2 that has arrived at the meeting place is displayed on the map. In addition, when the other vehicle position is outside the display range of the map or when the map scale is small, the other vehicle position may not be displayed.

  FIG. 9 is an example of a map screen when the position of another vehicle is displayed in step S940. In this screen, the scale of the map is enlarged compared to the screen of FIG. 8 by executing step S930. While the own vehicle position mark 30 is displayed, an other vehicle position mark 34 indicating the position of the other vehicle 2 is displayed in the parking lot 32. At this time, only the position of the other vehicle may be displayed on the map without displaying the vehicle position.

  In step S950, the control unit 101 determines whether or not to set the other vehicle position displayed in step S940 as the destination. If the user's operation instructs to set the other vehicle position as the destination, the process proceeds to step S960. On the other hand, when the position of the other vehicle is not set as the destination, the process returns to FIG. 3 to complete the arrival notification reception process in step S90.

  In step S960, the control unit 101 sets the other vehicle position displayed in step S940 as the destination. In step S970, the control unit 101 searches for a recommended route from the own vehicle position to the other vehicle position set as the destination in step S960 based on the map data recorded in the HDD 104. In step S980, the control unit 101 displays the recommended route searched in step S970 on the map. According to this recommended route, the host vehicle 1 is guided toward the destination position of the other vehicle. If step S980 is performed, the control part 101 will return to FIG. 3, and will complete the arrival notification reception process of step S90.

  Note that the same processing as described above is also executed in the control unit of the navigation device 20 mounted in the other vehicle 2. That is, the control unit of the navigation device 20 determines whether or not the position of the other vehicle 2 is in the vicinity of the meeting place in step S20, and if it is determined that the position is in the vicinity of the meeting place, the position information in step S30. Execute request processing. Thereby, the other vehicle position information is transmitted to the navigation device 10 (step S300), and the own vehicle position information is requested from the navigation device 10 (step S310). Based on the position information, the position of the host vehicle 1 is displayed on the map (step S340).

  When there is a request for position information from the navigation device 10, the control unit of the navigation device 20 executes a response process in step S50. Thus, it is determined whether or not the position of the other vehicle is within a predetermined distance from the meeting place (step S520). If it is determined that the other vehicle position is within the predetermined distance from the meeting place, in response to a request from the navigation device 10 The other vehicle position information is transmitted to the navigation device 10 (step S530). However, if it is determined that the distance is not within the predetermined distance from the meeting place, the other vehicle position information is not transmitted to the navigation device 10 even if there is a request from the navigation device 10.

  Furthermore, when the other vehicle 2 arrives at the meeting place, the control unit of the navigation device 20 executes an arrival notification process in step S70. Thereby, the notification that the other vehicle 2 has arrived at the meeting place is transmitted to the navigation device 10 (step S700), and the other vehicle position information is transmitted to the navigation device 10 together with the transmission of the notification (step S710). .

  When there is an arrival notification from the navigation device 10, the control unit of the navigation device 20 executes an arrival notification reception process in step S90. Thereby, the own vehicle position information transmitted from the navigation device 10 is received (step S900), and the position of the own vehicle 1 is displayed on the map based on the received own vehicle position information (step S940). The own vehicle position is set as the destination (step S960). Then, the recommended route from the position of the other vehicle to the vehicle position set as the destination is searched (step S970), and the searched recommended route is displayed on the map (step S980).

According to the embodiment described above, the following operational effects are obtained.
(1) The navigation device 10 sets a meeting place by the processing of the control unit 101 (step S1), and detects the position of the host vehicle 1 (step S10). It is determined whether or not the position of the host vehicle 1 is in the vicinity of the set meeting place (step S20). When it is determined that the position is in the vicinity of the meeting place, the navigation device 20 of the other vehicle 2 is referred to. Request other vehicle position information (step S310). In response to this request, the navigation device 20 transmits the other vehicle position information to the navigation device 10 (step S530). In this way, based on the other vehicle position information transmitted from the navigation device 20, the navigation device 10 displays the position of the other vehicle 2 on the map (step S340). Since it did in this way, when meeting with the other vehicle 2, the position of the other vehicle 2 can be acquired and displayed on a map at an appropriate timing.

(2) When there is a request for position information from the navigation device 10 in step S310, the navigation device 20 determines whether or not the position of the other vehicle 2 is within a predetermined distance from the meeting place (step S520). . As a result, when it is determined that the position of the other vehicle 2 is within a predetermined distance from the meeting place, the other vehicle position information is transmitted to the navigation device 10 in response to a request from the navigation device 10 (step S530). However, when it is determined that the position of the other vehicle 2 is not within a predetermined distance from the meeting place, even if there is a request from the navigation device 10, the other vehicle position information is not transmitted to the navigation device 10 without executing step S530. It was decided. Since it did in this way, other vehicle position information can be acquired when it is required in the own vehicle 1, omitting useless communication.

(3) The navigation device 10 determines whether or not the host vehicle 1 has arrived at the meeting place by the processing of the control unit 101 (step S60). The navigation device 20 is notified (step S700). Since it did in this way, it can notify to the other vehicle 2 reliably that the own vehicle 1 arrived at the meeting place.

(4) When the navigation device 10 determines that the host vehicle 1 has arrived at the meeting place in step S60 by the processing of the control unit 101, the navigation device 10 further notifies the navigation device 20 of the host vehicle position information together with the notification to that effect. It is decided to transmit (step S710). Since it did in this way, when it arrives at the meeting place, before communication with the other vehicle 2 stops, the own vehicle position information can be reliably transmitted to the other vehicle 2.

(5) When the vehicle position information is transmitted from the navigation device 10 in step S710 described above, the navigation device 20 sets the position of the vehicle 1 as a destination based on the vehicle position information (step S960). ). Then, the recommended route from the other vehicle position to the own vehicle position set as the destination is searched (step S970). Since it did in this way, the other vehicle 2 can reach the place of the own vehicle 1 which has already arrived at the meeting place easily and surely.

  In the above embodiment, an example in which the host vehicle 1 and the other vehicle 2 wait is described, but the same processing can be applied when three or more vehicles wait. Further, the present invention can be applied not only to a parking lot but also to other meeting places.

  The embodiment and various modifications described above are merely examples. Therefore, the present invention is not limited to these contents as long as the features of the invention are not impaired.

  In the embodiment described above, each unit described in the claims is realized by processing executed in the control unit 101 of the navigation device 10 or the control unit of the navigation device 20. That is, the control unit 101 of the navigation device 10 or the control unit of the navigation device 20 includes a first determination unit, a request unit, a display control unit, a transmission control unit, a second determination unit, a third determination unit, and an arrival notification unit. It can function as destination setting means and recommended route search means. Moreover, in embodiment described above, the 1st vehicle and the 2nd vehicle in a claim were demonstrated by the own vehicle 1 and the other vehicle 2, respectively. That is, the first navigation device corresponds to the navigation device 10 mounted on the host vehicle 1, and the second navigation device corresponds to the navigation device 20 mounted on the other vehicle 2. Note that the above description is merely an example, and when interpreting the invention, the correspondence between the description items of the embodiments and the description items of the claims is not limited or restricted.

It is a figure which shows the structural example of the system using the navigation apparatus by one embodiment of this invention. It is a figure which shows the structure of a navigation apparatus. It is a flowchart of the process performed when the own vehicle and another vehicle wait. It is a flowchart of a position information request process. It is a flowchart of a response process. It is a flowchart of an arrival notification process. It is a flowchart of an arrival notification receiving process. It is a figure which shows the example of an arrival notification screen. It is a figure which shows the example of the map screen when another vehicle position is displayed.

Explanation of symbols

1: host vehicle 2: other vehicle 10, 20: navigation device 11, 21: communication terminal 101: control unit 102: vibration gyro 103: vehicle speed sensor 104: HDD
105: GPS receiver 106: Display monitor 107: Input device

Claims (7)

A navigation system having a first navigation device mounted on a first vehicle and a second navigation device mounted on a second vehicle,
The first navigation device includes:
First determination means for determining whether or not the position of the first vehicle is in the vicinity of a set meeting place;
Request means for requesting the second navigation device for position information of the second vehicle when the first determination means determines that the position of the first vehicle is in the vicinity of the meeting place. When,
Display control means for displaying the position of the second vehicle on a map based on the position information of the second vehicle transmitted from the second navigation device in response to a request by the request means;
The second navigation device is
A navigation system comprising transmission control means for transmitting position information of the second vehicle to the first navigation device in response to a request by the request means. The navigation system according to claim 1,
The second navigation device further includes second determination means for determining whether the position of the second vehicle is within a predetermined distance from the meeting place,
When the second determination unit determines that the position of the second vehicle is within a predetermined distance from the meeting place, the transmission control unit determines the second vehicle according to a request from the request unit. When the position information is transmitted to the first navigation device and the second determination means determines that the position of the second vehicle is not within a predetermined distance from the meeting place, there is a request from the request means. In the navigation system, the position information of the second vehicle is not transmitted to the first navigation device. The navigation system according to claim 1 or 2,
The first navigation device includes:
Third determining means for determining whether or not the first vehicle has arrived at the meeting place;
When it is determined by the third determination means that the first vehicle has arrived at the meeting place, it further comprises arrival notification means for transmitting a notification to that effect to the second navigation device. And navigation system. The navigation system according to claim 3,
The arrival notification means, when it is determined by the third determination means that the first vehicle has arrived at the meeting place, is further notified of the position information of the first vehicle along with the notification to that effect. A navigation system characterized by transmitting to a second navigation device. The navigation system according to claim 4, wherein
The second navigation device is
Destination setting means for setting the position of the first vehicle as a destination based on the position information of the first vehicle transmitted by the arrival notification means;
A navigation system further comprising recommended route searching means for searching for a recommended route from the position of the second vehicle to the position of the first vehicle set as the destination by the destination setting means. First determination means for determining whether or not the position of the host vehicle is near a set meeting place;
Request means for requesting other vehicle position information to the other vehicle when the first determination means determines that the position of the host vehicle is near the meeting place;
A navigation apparatus comprising: display control means for displaying a position of the other vehicle on a map based on other vehicle position information transmitted from the other vehicle in response to a request from the request means. Second determination means for determining whether or not the position of the host vehicle is within a predetermined distance from the set meeting place;
When the second determination means determines that the position of the host vehicle is within a predetermined distance from the meeting place, the host vehicle position information is transmitted to the other vehicle in response to a request from the other vehicle. A transmission control means for not transmitting the own vehicle position information to the other vehicle even if there is a request from the other vehicle when it is determined by the second determining means that the position of the own vehicle is not within a predetermined distance from the meeting place; A navigation device comprising:

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